From 6b32fafee2bb5fcf0b3d3d04a9762d3a0212089e Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 20 Jun 2014 14:37:38 +0200 Subject: dmaengine: shdma: Add more register documentation Also add a few definitions that were missing. Signed-off-by: Geert Uytterhoeven Signed-off-by: Simon Horman --- include/linux/sh_dma.h | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h index b7b43b82231e..56b97eed28a4 100644 --- a/include/linux/sh_dma.h +++ b/include/linux/sh_dma.h @@ -95,19 +95,21 @@ struct sh_dmae_pdata { }; /* DMAOR definitions */ -#define DMAOR_AE 0x00000004 +#define DMAOR_AE 0x00000004 /* Address Error Flag */ #define DMAOR_NMIF 0x00000002 -#define DMAOR_DME 0x00000001 +#define DMAOR_DME 0x00000001 /* DMA Master Enable */ /* Definitions for the SuperH DMAC */ -#define DM_INC 0x00004000 -#define DM_DEC 0x00008000 -#define DM_FIX 0x0000c000 -#define SM_INC 0x00001000 -#define SM_DEC 0x00002000 -#define SM_FIX 0x00003000 -#define CHCR_DE 0x00000001 -#define CHCR_TE 0x00000002 -#define CHCR_IE 0x00000004 +#define DM_INC 0x00004000 /* Destination addresses are incremented */ +#define DM_DEC 0x00008000 /* Destination addresses are decremented */ +#define DM_FIX 0x0000c000 /* Destination address is fixed */ +#define SM_INC 0x00001000 /* Source addresses are incremented */ +#define SM_DEC 0x00002000 /* Source addresses are decremented */ +#define SM_FIX 0x00003000 /* Source address is fixed */ +#define RS_AUTO 0x00000400 /* Auto Request */ +#define RS_ERS 0x00000800 /* DMA extended resource selector */ +#define CHCR_DE 0x00000001 /* DMA Enable */ +#define CHCR_TE 0x00000002 /* Transfer End Flag */ +#define CHCR_IE 0x00000004 /* Interrupt Enable */ #endif -- cgit v1.2.3 From f892afb07eeecf575179c4747952644a82a92a36 Mon Sep 17 00:00:00 2001 From: Nicolin Chen Date: Mon, 16 Jun 2014 11:31:05 +0800 Subject: dmaengine: imx-sdma: Add a new DMATYPE for Shared Peripheral ASRC Shared Peripheral ASRC, running on SPBA, needs to use shp sciprts for DMA transfer. So this patch just adds a new DMATYPE for it. Signed-off-by: Nicolin Chen Acked-by: Shawn Guo Signed-off-by: Vinod Koul --- include/linux/platform_data/dma-imx.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-imx.h b/include/linux/platform_data/dma-imx.h index bcbc6c3c14c0..7aa0e89d1bcc 100644 --- a/include/linux/platform_data/dma-imx.h +++ b/include/linux/platform_data/dma-imx.h @@ -40,6 +40,7 @@ enum sdma_peripheral_type { IMX_DMATYPE_ASRC, /* ASRC */ IMX_DMATYPE_ESAI, /* ESAI */ IMX_DMATYPE_SSI_DUAL, /* SSI Dual FIFO */ + IMX_DMATYPE_ASRC_SP, /* Shared ASRC */ }; enum imx_dma_prio { -- cgit v1.2.3 From 0c9dbebdb6611d2cd75d025ec09035c3e8ce2160 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 11 Jul 2014 18:18:26 +0200 Subject: dmaengine: Remove unused definition of DMA_MAX_COOKIE As of commit commit f04cd40701deace2efb9edd7120e59366bda2118 ("fsldma: fix controller lockups"), its last (and only ever) user is gone. Signed-off-by: Geert Uytterhoeven Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index d2c5cc7c583c..4eb2f82aed1d 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -37,7 +37,6 @@ */ typedef s32 dma_cookie_t; #define DMA_MIN_COOKIE 1 -#define DMA_MAX_COOKIE INT_MAX static inline int dma_submit_error(dma_cookie_t cookie) { -- cgit v1.2.3 From 16369efb1f6006ec79babe53f388eed431533596 Mon Sep 17 00:00:00 2001 From: Alexander Popov Date: Wed, 25 Jun 2014 14:52:59 +0400 Subject: dmaengine: of: add common xlate function for matching by channel id This patch adds a new common OF dma xlate callback function which will match a channel by it's id. The binding expects one integer argument which it will use to lookup the channel by the id. Unlike of_dma_simple_xlate this function is able to handle a system with multiple DMA controllers. When registering the of dma provider with of_dma_controller_register a pointer to the dma_device struct which is associated with the dt node needs to passed as the data parameter. New function will use this pointer to match only channels which belong to the specified DMA controller. Signed-off-by: Alexander Popov Signed-off-by: Vinod Koul --- include/linux/of_dma.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h index ae36298ba076..56bc026c143f 100644 --- a/include/linux/of_dma.h +++ b/include/linux/of_dma.h @@ -41,6 +41,8 @@ extern struct dma_chan *of_dma_request_slave_channel(struct device_node *np, const char *name); extern struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, struct of_dma *ofdma); +extern struct dma_chan *of_dma_xlate_by_chan_id(struct of_phandle_args *dma_spec, + struct of_dma *ofdma); #else static inline int of_dma_controller_register(struct device_node *np, struct dma_chan *(*of_dma_xlate) @@ -66,6 +68,8 @@ static inline struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_s return NULL; } +#define of_dma_xlate_by_chan_id NULL + #endif #endif /* __LINUX_OF_DMA_H */ -- cgit v1.2.3 From eb3fe7def66511120766c8fc05ee9631cce7fe6f Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 8 Jul 2014 13:46:37 +0300 Subject: ARM: edma: Add edma_assign_channel_eventq() to move channel to a give queue In some cases it is desired to move a channel to a specific event queue. Such a use case is audio, where it is preferred that it is served with highest priority compared to other DMA clients. Signed-off-by: Peter Ujfalusi Acked-by: Sekhar Nori Signed-off-by: Vinod Koul --- include/linux/platform_data/edma.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/edma.h b/include/linux/platform_data/edma.h index eb8d5627d080..bdb2710e2aab 100644 --- a/include/linux/platform_data/edma.h +++ b/include/linux/platform_data/edma.h @@ -150,6 +150,8 @@ void edma_clear_event(unsigned channel); void edma_pause(unsigned channel); void edma_resume(unsigned channel); +void edma_assign_channel_eventq(unsigned channel, enum dma_event_q eventq_no); + struct edma_rsv_info { const s16 (*rsv_chans)[2]; -- cgit v1.2.3 From 31c1e5a1350ae8d1bc2018f5de8264266d9773e1 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 1 Aug 2014 12:20:10 +0200 Subject: dmaengine: Remove the context argument to the prep_dma_cyclic operation The argument is always set to NULL and never used. Remove it. Signed-off-by: Laurent Pinchart Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 4eb2f82aed1d..94ddccd706fc 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -669,7 +669,7 @@ struct dma_device { struct dma_async_tx_descriptor *(*device_prep_dma_cyclic)( struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len, size_t period_len, enum dma_transfer_direction direction, - unsigned long flags, void *context); + unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)( struct dma_chan *chan, struct dma_interleaved_template *xt, unsigned long flags); @@ -744,7 +744,7 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic( unsigned long flags) { return chan->device->device_prep_dma_cyclic(chan, buf_addr, buf_len, - period_len, dir, flags, NULL); + period_len, dir, flags); } static inline struct dma_async_tx_descriptor *dmaengine_prep_interleaved_dma( -- cgit v1.2.3